Now that's a strange bug. Users reported last February that Windows was behaving strangely with some printers: instead of outputting a normal page, the machines were printing random text and network commands.
If this has happened to you, you can stop searching for a solution and endlessly reinstalling your printer drivers. Microsoft has acknowledged the situation and confirms that it is a bug on its support platform.
The issue stems from a recent Windows 11 update in the preview channel. The bug affects USB-connected printers running on both USB Print and wireless.
A "spooler" issue
More specifically, Microsoft explains that the problem involves the print spooler, the small program that manages the print queue. This "sends messages [...] to the printer, causing unexpected text to print."
Microsoft says that if the printed text begins with "POST /ipp/print HTTP/1.1" you are likely affected. Another clarification: the problem "tends to occur more often when the printer is turned on or reconnected to the device after being disconnected."
Which versions are affected?
Various versions of Windows 11 are affected, including updates version 23H2 and version 22H2. Windows 10 version 22H2 is also affected.
How to fix the problem?
Microsoft is preparing an update to fix the problem. In the meantime, a somewhat technical solution has been generated. It is a rather special update called KIR (Known Issue Rollback), which corrects a specific problem by rolling the machine back to a previous update.
If you are using a machine that does not belong to a professional fleet, you do not have to do anything specific, the KIR update will be added automatically by Microsoft. You will need to restart the machine. Users with a Pro version can apply the update using Group Policy, a somewhat tedious process explained in in detail on the site of the Redmond giant.
Source: XDA
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